.app {
  width: 100vw;
  height: 100vh;
  display: flex;
  margin: 0;

  .card-box,
  .card-form {
    position: relative;
    height: 100vh;
  }

  .card-form {
    width: 50%;
    overflow: hidden;
    overflow-y: auto;
    background-color: #fff;
  }

  .card-box {
    flex: 1;
    display: flex;

    canvas {
      margin: auto; 
      max-width: 85%;
      max-height: 85%;
      min-width: 200px;
      min-height: 200px;
    }
  }
}
